CN200949812Y

CN200949812Y - Environment-protective energy-saved stream boiler

Info

Publication number: CN200949812Y
Application number: CN 200620002654
Authority: CN
Inventors: 朱家平
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-01-05
Filing date: 2006-01-05
Publication date: 2007-09-19
Anticipated expiration: 2016-01-05

Abstract

The utility model discloses an environment-protection energy-saving steam boiler, which arranges a furnace bridge (11) as a V-shaped vessel with upper part large and lower part small and changes the air duct of an air blower to be a ring air duct (10), the ring air duct (10) is provided with holes that are distributed on the wall of the ring air duct (10) to enable the air blower to blow uniform air into the furnace chamber (14); arranges four secondary air ducts (5), and mounts a flange-type cut-off valve (8) on the secondary air duct (5); a coal-filling device (12) undertakes the hollow-tube spiral coal filling and the motor circuit is provided with a time relay; and the thread pitch of the hollow-tube spiral is from 50 mm to 500 mm. The beneficial effect of the utility model is that the environment-protection energy-saving steam boiler saves coal energy resource, the labor operation is convenient and the coal filling device has simple structure, which enables the dust and smoke exhaustion to attain the national standard and is beneficial for the environment protection.

Description

The environment-friendly type energy-saving steam boiler

Affiliated technical field

The utility model relates to a kind of boiler plant, especially a kind of environment-friendly type energy-saving steam boiler plant.

Background technology

At present, big, the poor thermal efficiency of the coal-fired steam boiler coal consumption on the market, soot emissions often do not reach the national standard required value.Patent (CN1251369.5 is to call background technology in the following text) is added with three secondary air channels, air blast, coal conveyor on the boiler that is assembled.Though this kind technology is eliminating smoke and flue dust is carried out that certain effect is arranged in the desulfurization, there is following problem down in this background technology: the first, and smoke density is big during the beginning coal, and dust, flying dust are serious; The second, secondary wind can't be regulated, and influences excess air coefficient in the boiler, and excess air increases in the burner hearth if enter, to make temperature reduction in the burner hearth, increase coal consumption, if the furnace air amount reduces, air is just cannot kept under control the flue gas that discharge burning back, and boiler will over-emitting black exhaust, is unfavorable for environmental protection; The 3rd, air intake is inhomogeneous in the burner hearth, over against the position blast maximum in air blast air port, can make the coal grain at this place blow to other places, form " burner ", promptly this place will not have the coal seam, and other local coal can be too much, and the stove internal combustion is very unstable, and combustible gas that should after-flame is known from experience and small carbon granules is directly discharged burner hearth, enter atmosphere, uneconomical not environmental protection; The 4th, coal supply apparatus infrastructure cost height does not add self-con-tained unit, and coal can not fully be burnt.

The utility model content

In order to overcome the deficiency of existing coal-fired steam boiler device, the utility model provides a kind of coal-fired steam boiler device of saving fire coal, removing boiler black smoke, being particularly suitable for environmental requirement height and the relative area that lacks of fuel source.

The technical scheme that its technical problem that solves the utility model adopts is:

In the combustion system, air blast is used air loop duct (10), air loop duct (10) tube wall is provided with the hole, makes pore size distribution on the loop type wind pipe wall; Secondary air channel (5) is set to four, and the secondary air channel air outlet is not arranged on same horizontal plane respectively, on secondary air channel, install flange form control valve (8) additional; In annular smoke-box (1) lining gap (3) is set, the gap mouth of pipe is higher than annular smoke-box (1) lower surface; Coal supply apparatus (12) is a blank pipe spiral coal, and its motor circuit is provided with the time relay, and its pitch of blank pipe spiral is 50mm--500mm.Grate (11) is set to " V " font, little big small container shape down.

The beneficial effects of the utility model are, save the coal energy, make things convenient for manually-operated, and coal feeder is simple in structure, and allowing flue dust discharge can be up to state standards, and is beneficial to environmental protection.

Description of drawings

Fig. 1 is the utility model structure chart.

Fig. 2 is the utility model structure A-A cutaway view

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

Grate (11) is set to " V " font, up big and down small container shapes; Air loop duct (10) is arranged under the grate (11), air loop duct (10) is provided with the hole, be evenly distributed on the air loop duct wall, like this, when air blast was worked, air can be from flowing out the direction airduct everywhere, and was even when air quantity, blast enter burner hearth (14), just can not produce " burner " in burner hearth (14), the coal burning is very abundant like this.

Increase secondary air channel (5), installing additional by former three is four, and the air outlet that makes secondary air channel (5) strengthens the banking fire ability of secondary air channel not on same horizontal plane, and flue gas increases dead time in stove, and burning degree is increased.

On secondary air channel (5), install flange form stop valve (8) additional, when secondary wind is excessive in the burner hearth (14), regulate the aperture of stop valve (8), reduce air intake; When secondary air flow is very few, strengthen air intake, make stove internal combustion situation stable, save the coal energy.

In annular smoke-box (1), gap (3) mouth of pipe is exceeded annular smoke-box (1) lower surface 50mm, inject water in annular smoke-box (1) from flushing import (15), just have the water layer of 50mm in the annular smoke-box (1), the water that surpasses 50mm can overflow from overflow pipe (6).During igniting, when flue gas flow to annular smoke-box (1), the boiling of being heated of the water in the annular smoke-box (1), foam and the strong mixing of flue gas generation, the flue dust in the flue gas is melted in the foam, is pulled away by overflow pipe (6) then, simultaneously, fails burned SO ₂By owing to continue to be oxidized to SO ₃, combine the back with water and generate H ₂SO ₄, also be discharged together with water, what discharge by chimney (17) at last is exactly to reach national target flue gas.

Coal supply apparatus (12) is a blank pipe spiral coal, and motor circuit is provided with the time relay, and described its pitch of blank pipe spiral is 50mm--500mm.In the time relay, motor moves by the time that is provided with and rests, and so just can guarantee has sufficient coal supply in the stove, prevent the excessive adding of coal again.

In conjunction with the accompanying drawings the specific embodiment of the present utility model has been carried out exemplary description above, obviously the utility model is not limited thereto, and the various remodeling that carry out in the utility model scope all do not exceed protection domain of the present utility model.

Claims

1, environment-friendly type energy-saving steam boiler, constitute by burner and boiler body, burner comprises air blast (9), grate (11), coal feeder (12), secondary air channel (5), and boiler body comprises annular smoke-box (1), overflow pipe (6), gap (3); It is characterized in that it is annular discharge pipe that described air blast goes out pipe (10); Described secondary air channel (5) is four, and installs shutoff valve (8) additional on secondary air channel (5); Described gap (3) mouth of pipe is higher than the lower surface of annular smoke-box (1); Described coal supply apparatus (12) is the blank pipe spiral; Described grate (11) is top big following little one-tenth container shapes;

2, environmental protection and energy saving steam boiler according to claim 1 is characterized in that, described annular discharge pipe (10) tube wall is provided with the hole;

3, environmental protection and energy saving steam boiler according to claim 1 is characterized in that, described shutoff valve (8) is the flange form shutoff valve;

4, environmental protection and energy saving steam boiler according to claim 1 is characterized in that, described secondary air channel (5) air outlet is not in same horizontal plane position;

5, environmental protection and energy saving steam boiler according to claim 1 is characterized in that, described coal supply apparatus (12) motor circuit is provided with the time relay;

6, environmental protection and energy saving steam boiler according to claim 1 is characterized in that, described its pitch of blank pipe spiral is 50mm--500mm;

7, environmental protection and energy saving steam boiler according to claim 1 is characterized in that, described container shapes grate is " V " font grate.